Merge #1403

1403: Add alloc -> core dependency r=matklad a=flodiebold

Also a small fix for the ra-emacs-lsp company fix.

Co-authored-by: Florian Diebold <florian.diebold@freiheit.com>
Co-authored-by: Florian Diebold <flodiebold@gmail.com>

crates/ra_project_model/src/sysroot.rs

@@ -70,6 +70,11 @@ pub fn discover(cargo_toml: &Path) -> Result<Sysroot> {
                 }
             }
         }
+        if let Some(alloc) = sysroot.by_name("alloc") {
+            if let Some(core) = sysroot.by_name("core") {
+                sysroot.crates[alloc].deps.push(core);
+            }
+        }
         Ok(sysroot)
     }
 

editors/emacs/ra-emacs-lsp.el

@@ -81,7 +81,7 @@
 
 (with-eval-after-load 'company-lsp
   ;; company-lsp provides a snippet handler for rust by default that adds () after function calls, which RA does better
-  (setq company-lsp--snippet-functions (assq-delete-all "rust" company-lsp--snippet-functions)))
+  (setq company-lsp--snippet-functions (cl-delete "rust" company-lsp--snippet-functions :key #'car :test #'equal)))
 
 ;; join lines